CN109031567A - Outdoor leading in cable - Google Patents

Outdoor leading in cable Download PDF

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Publication number
CN109031567A
CN109031567A CN201811236365.9A CN201811236365A CN109031567A CN 109031567 A CN109031567 A CN 109031567A CN 201811236365 A CN201811236365 A CN 201811236365A CN 109031567 A CN109031567 A CN 109031567A
Authority
CN
China
Prior art keywords
cable
nonmetallic
core
restrictive coating
strengthening core
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811236365.9A
Other languages
Chinese (zh)
Inventor
张鑫元
史惠萍
顾利国
李惠强
顾小峰
詹学龙
孙伟
盛惠良
崔仲敏
张萍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hengtong Optic Electric Co Ltd
Original Assignee
Jiangsu Hengtong Optic Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Hengtong Optic Electric Co Ltd filed Critical Jiangsu Hengtong Optic Electric Co Ltd
Priority to CN201811236365.9A priority Critical patent/CN109031567A/en
Publication of CN109031567A publication Critical patent/CN109031567A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401Optical cables
    • G02B6/4429Means specially adapted for strengthening or protecting the cables
    • G02B6/443Protective covering
    • G02B6/4432Protective covering with fibre reinforcements
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401Optical cables
    • G02B6/4429Means specially adapted for strengthening or protecting the cables
    • G02B6/443Protective covering
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401Optical cables
    • G02B6/4429Means specially adapted for strengthening or protecting the cables
    • G02B6/44384Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Communication Cables (AREA)

Abstract

The invention discloses a kind of outdoor leading in cables, the cross section of the optical cable is circle, it includes cable core, the inner restrictive coating being coated on the outside of the cable core and the external sheath layer being coated on the outside of inner restrictive coating, it is embedded with the nonmetallic strengthening core of the six roots of sensation first in the inner restrictive coating, the nonmetallic strengthening core of the six roots of sensation first is distributed in using the center of the cable core as on the concentric circles in the center of circle and each first nonmetallic strengthening core equalization central angle distribution;Synchronous insertion during forming inner restrictive coating of first nonmetallic strengthening core described in the six roots of sensation.Outdoor leading in cable of the invention, the cable type structure of optimization design enables optical cable to meet a variety of laying requirements such as aerial, direct-burried, pipeline and outdoor introducing interior simultaneously, it is easy for construction, fiber cable laying duration and use cost can be greatly shortened after use, reduce the splicing point of outdoor introducing interior laying.

Description

Outdoor leading in cable
Technical field
The invention belongs to fiber optic cable communications technical fields, and in particular to a kind of outdoor leading in cable for facilitating laying.
Background technique
Traditional optical cable has aerial, direct-burried and pipeline three types, outdoor aerial optical cable one according to system of laying classification As based on 8-shaped band messenger wire self-support cable, round self-support cable;Outdoor direct burial optical cable is generally with metal armouring circular light Based on cable;Yard piping optical cable is generally based on metal armouring or non-metallic optical fiber cables;Inside cable is generally with fixed type optical cable It is main, it is desirable that the characteristics such as soft, fire-retardant.The optical cable of these structures is the current domestic cable configuration used on a large scale.
With the development of FTTH construction in recent years, the laying environment of FTTH construction is complex, does not require nothing more than networking flexibility It is convenient, low in cost, and require site operation is convenient, reduces splicing point etc..Current three big mainstreams described above are registered one's residence light The paving mode of cable structure cannot fully meet laying demand, if encountering special construction site, for example, needing to pass through Pipeline, the aerial construction site registered one's residence, current cable type structure need to meet outdoor laying requirement using two kinds of optical cable combinations Cable type requires the combination of cable type with indoor laying is met, and needs to increase splicing point during outdoor introducing is indoor, can undoubtedly be applied Work brings inconvenience.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of outdoor leading in cable, the cable type structure of optimization design makes light Cable can meet a variety of laying requirements such as aerial, direct-burried, pipeline and outdoor introducing interior simultaneously, easy for construction, can after use Fiber cable laying duration and use cost is greatly shortened, reduces the splicing point of outdoor introducing interior laying.
In order to solve the above-mentioned technical problems, the present invention provides a kind of outdoor leading in cables, and the cross section of the optical cable is It is round comprising cable core, the inner restrictive coating being coated on the outside of the cable core and the external sheath layer being coated on the outside of inner restrictive coating, institute It states and is embedded with the nonmetallic strengthening core of the six roots of sensation first in inner restrictive coating, the nonmetallic strengthening core of the six roots of sensation first is distributed in the cable The center of core is on the concentric circles in the center of circle and each first nonmetallic strengthening core equalization central angle is distributed;First described in the six roots of sensation Synchronous insertion during forming inner restrictive coating of nonmetallic strengthening core.
It further comprise that the second nonmetallic reinforcement is embedded in the external sheath layer in a preferred embodiment of the present invention Core, the second nonmetallic strengthening core synchronous insertion during forming external sheath layer;Wherein, the described first nonmetallic reinforcement Core diameter of the core diameter of core less than the second nonmetallic strengthening core.
It further comprise the described first nonmetallic strengthening core and the second nonmetallic reinforcement in a preferred embodiment of the present invention The direction that core is embedded in respective restrictive coating is identical.
It further comprise that the described first nonmetallic strengthening core or/and second are nonmetallic in a preferred embodiment of the present invention Strengthening core is FRP strengthening core.
It further comprise between the inner restrictive coating and external sheath layer equipped with nonmetallic in a preferred embodiment of the present invention Protective layer, the nonmetallic protective layer are coated on the outside of inner restrictive coating, and the external sheath layer is coated on the outside of nonmetallic protective layer.
In a preferred embodiment of the present invention, further comprise the nonmetallic protective layer be fiber yarn layer.
It further comprise that tear rope is embedded in the external sheath layer in a preferred embodiment of the present invention, the tearing Rope synchronous insertion during forming external sheath layer.
It further comprise the inner restrictive coating and external sheath layer is low smoke halogen-free in a preferred embodiment of the present invention Restrictive coating.
It further comprise the cable core include fiber unit and clad optical fiber unit in a preferred embodiment of the present invention Insulating layer, the excess fiber length of the fiber unit are 1.0 ‰~2.0 ‰.
In a preferred embodiment of the present invention, further comprise between the fiber unit and insulating layer filled with fiber paste or Dry type flexible water blocking yarn.
Beneficial effects of the present invention: outdoor leading in cable of the invention, the cable type structure of optimization design enable optical cable Meet a variety of laying requirements such as aerial, direct-burried, pipeline and outdoor introducing interior simultaneously, it is easy for construction, it can be significantly after use Shorten fiber cable laying duration and use cost, reduces the splicing point of outdoor introducing interior laying.
Detailed description of the invention
Fig. 1 is the sectional view of outdoor leading in cable in the preferred embodiment of the present invention.
Wherein: 2- cable core, 4- inner restrictive coating, 6- external sheath layer, the nonmetallic strengthening core of 8- first, 10- second is nonmetallic to be added The nonmetallic protective layer of Qiang Xin, 12-, 14- tear rope, 16- fiber unit, 18- insulating layer.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Embodiment
Shown in referring to Fig.1, the invention discloses a kind of outdoor leading in cable, the cross section of above-mentioned optical cable is circle, packet Include cable core 2, the inner restrictive coating 4 for being coated on above-mentioned 2 outside of cable core, nonmetallic protective layer 12, the packet for being coated on 4 outside of inner restrictive coating Overlay on the external sheath layer 6 in nonmetallic 12 outside of protective layer.Above-mentioned cable core 2 includes the exhausted of fiber unit 16 and clad optical fiber unit 16 Edge layer 18 is filled with fiber paste or dry type flexible water blocking yarn between above-mentioned fiber unit 16 and insulating layer 18.
As shown in Figure 1, being embedded with the nonmetallic strengthening core 8 of the six roots of sensation first, the non-gold of the above-mentioned six roots of sensation first in above-mentioned inner restrictive coating 4 Belong to strengthening core 8 be distributed in using the center of above-mentioned cable core 2 as on the concentric circles in the center of circle and each above-mentioned first nonmetallic strengthening core 8 Equal central angles distribution;Synchronous insertion during forming inner restrictive coating 4 of the nonmetallic strengthening core 8 of the six roots of sensation above-mentioned first.
In the present embodiment technical solution, the inner restrictive coating 4 of forming covered cable core 2 uses the inner sheath of squash type Fixture Design Mold, inner sheath mold has mold core centre bore and six reinforcement core bore, six strengthening core pore size distributions are being with mold core centre bore On circular concentric circles, and angle of the two neighboring hole heart for reinforcing core bore respectively between the hole heart line of mold core centre bore is 60 °, that is, each (60 °) distributions in the reinforcement equal concentric angle of core bore.
Inner restrictive coating 4, the non-gold of the six roots of sensation first during molding inner restrictive coating 4 are formed using the inner sheath mold of the above structure Category strengthening core 8 is equidirectional with cable core 2 and respectively enters in respectively reinforcement core bore, synchronizes with the forming process of inner restrictive coating 4 embedding Enter in inner restrictive coating 4.First nonmetallic strengthening core 8 is embedded in inner restrictive coating 4, and strengthening core can achieve complete stress, tension Performance is more excellent, is capable of the maximum drawing-resistant function for playing strengthening core, is placed in compared to traditional by reinforcer is loose In optical cable, under conditions of using comparable size reinforcer, the optical cable tensile performance of the application is more excellent.On the other hand, inner sheath Layer 4 is embedded in the first uniformly distributed nonmetallic strengthening core 8 of six roots of sensation circumferencial direction, enables cable core 2 in circumferencial direction by abundant Protection, optical cable integrally have preferable lateral pressure resistant performance, in the case where external sheath layer 6 is stripped, are tightly prevented by inner restrictive coating 4 The cable core 2 of shield can meet the requirements that optical cable is laid indoors, with this, be able to solve optical cable by the laying of outdoor introducing interior The problem of without increasing splicing point.
Meanwhile the nonmetallic strengthening core 8 of the six roots of sensation first is uniformly distributed in circumferencial direction, the optical cable after stranding is in aerial laying by outer Environment influence in boundary's is small, i.e., suffered load is small, in the case where meeting identical radiation environment, can reduce the first expensive nonmetallic reinforcement The usage quantity of core 8 reduces material cost.
Certainly, according to actual needs, the quantity of the first nonmetallic strengthening core 8 can also be more, but more quantity first The use of nonmetallic strengthening core 8 can increase the cable diameter and production cost of optical cable after stranding at double, 24 after the application stranding The outer diameter of core optical cable can be controlled in 5~8mm.Meanwhile the manufacturing process difficulty of inner sheath mold is very big, manufacturing cost is high; And the promotion of lateral pressure resistant performance almost can be ignored.On the other hand, the quantity of the first nonmetallic strengthening core 8 can also be less than The six roots of sensation, for example, two, four etc., the optical cable cable diameter of stranding and the insertion six roots of sensation after insertion two, four first nonmetallic strengthening cores The optical cable cable diameter of first nonmetallic strengthening core is suitable, and still, the optical cable after stranding only has preferable tensile property, faint Lateral pressure resistant performance and insertion the nonmetallic strengthening core 8 of the six roots of sensation first optical cable be not a magnitude.
Herein it should be noted that cable core is not necessarily in parallel shape when the usage amount of the first nonmetallic strengthening core 8 is 2 State, the directions of the nested two first nonmetallic strengthening cores 8 of inner restrictive coating 4 may with external sheath layer two second it is nonmetallic plus Strong core direction is vertical, and it is uneven to will lead to sleeve stress after optical cable bending.And when using the first nonmetallic strengthening core of the six roots of sensation, cable core Restrictive coating can with uniform stressed, not by bending direction and influence, reduce fibre loss simultaneously extend optical cable service life.
As a further improvement of the present invention, it is embedded with the second nonmetallic strengthening core 10 in above-mentioned external sheath layer 6, above-mentioned Synchronous insertion during forming external sheath layer 6 of two nonmetallic strengthening cores 10;Wherein, the core of the above-mentioned first nonmetallic strengthening core Core diameter of the diameter less than the second nonmetallic strengthening core.In the present embodiment technical solution, the core diameter of the first nonmetallic strengthening core 8 is 0.5 ~1mm, the core diameter of the second nonmetallic strengthening core 10 are 0.8~2mm;Wherein, the above-mentioned first nonmetallic strengthening core and the second non-gold The direction that category strengthening core is embedded in respective restrictive coating is identical.
External sheath layer 6, which is embedded in the telescopiny and inner restrictive coating 4 of the second nonmetallic strengthening core 10, is embedded in the first non-gold The process for belonging to strengthening core 8 is consistent, and details are not described herein again.
Outer protective sleeve of the external sheath layer 6 as optical cable, is internally embedded strengthening core, so that the optical cable after stranding is with excellent Tensile property.
Above-mentioned first nonmetallic strengthening core 8 or/and the second nonmetallic strengthening core 10 are FRP strengthening core, the reinforcement of FRP material Core is compared to traditional aramid fiber reinforcer, and while with identical reinforcement protective effect, the usage amount of FRP will be lacked, and can reduce The preparation cost of optical cable;On the other hand, FRP inlay can greatly reduce after inner sheath shunk because of restrictive coating caused by fibre loss Increase.
In a preferred embodiment of the present invention, further comprise above-mentioned nonmetallic protective layer be fiber yarn layer, fiber aramid fiber The material of yarn layer is water resistance aramid fiber yarn, the organdy that blocks water, block water one of basalt fibre yarn or a variety of combinations, has resistance There is enough protection intensity and tensile strength while aqueous energy.
Tear rope 14 is embedded in above-mentioned external sheath layer 6, above-mentioned tear rope 14 is synchronous during forming external sheath layer 6 Insertion.It is embedded in the quick stripping that tear rope 14 is conducive to external sheath layer 6, meets the easy stripping performance of aerial optical cable.
Above-mentioned inner restrictive coating 4 and external sheath layer 6 are low smoke halogen-free restrictive coating, have anti-flammability, meet indoor cable Design requirement.
Above-mentioned fiber unit 16 is obtained more than stable optical fiber using the trombone slide mold cooperation fiber paste fill process of big draw ratio It is long, remaining a length of 1.0 ‰~2.0 ‰, guarantee the mechanical performance and fade performance of optical cable after stranding.
The outdoor leading in cable of the above structure design can meet aerial, direct-burried, pipeline and outdoor introducing interior etc. simultaneously A variety of laying requirements, particular technique advantage are as follows:
1, when for aerial laying: strengthening core, which is embedded in restrictive coating, is made circular optical cable, can reduce cable outer diameter ruler While very little, there is bending resistance, softness, while there is certain lateral pressure resistant performance.When optical cable makes somebody a mere figurehead laying, it is laid on electric wire Installation is fixed using fitting (strain insulator or overhanging golden tool) in abutment extending, light is held by preformed armor rods winding between fitting and optical cable Cable (can also hold optical cable using other modes) is drawn or is hung, and the optical cable with certain lateral pressure resistant performance can prevent Preformed armor rods (or other fittings) are held and damage optical cable.
2, when being used for pipeline laying: the fiber paste or dry type flexible water blocking yarn filled between fiber unit and insulating layer have resistance Water characteristic, nonmetallic protective layer uses water resistance aramid fiber fibrous layer, so that optical cable integrally meets infiltration test requirement.
3, when being used for directly buried installation: optical cable cable type structure uses non-metallic sheath, meets directly buried installation demand.
4, when outdoor introducing interior laying: entire optical cable uses nonmetallic reinforcement structure, and oversheath is directly removed after registering one's residence Layer is just able to satisfy the requirement laid in optical cable room, while the inner restrictive coating tool of low smoke halogen-free by the cable core that inner restrictive coating coats There is flame retardant property.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention It encloses without being limited thereto.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in the present invention Protection scope within.Protection scope of the present invention is subject to claims.

Claims (10)

1. a kind of outdoor leading in cable, it is characterised in that: the cross section of the optical cable is circle comprising cable core is coated on institute The external sheath layer stating inner restrictive coating on the outside of cable core and being coated on the outside of inner restrictive coating is embedded with the six roots of sensation the in the inner restrictive coating One nonmetallic strengthening core, the nonmetallic strengthening core of the six roots of sensation first are distributed in using the center of the cable core as the concentric circles in the center of circle Upper and each first nonmetallic strengthening core equalization central angle distribution;The first nonmetallic strengthening core is in molding described in the six roots of sensation Synchronous insertion during restrictive coating.
2. outdoor leading in cable as described in claim 1, it is characterised in that: it is nonmetallic to be embedded with second in the external sheath layer Strengthening core, the second nonmetallic strengthening core synchronous insertion during forming external sheath layer;Wherein, described first is nonmetallic Core diameter of the core diameter of strengthening core less than the second nonmetallic strengthening core.
3. outdoor leading in cable as claimed in claim 2, it is characterised in that: the first nonmetallic strengthening core and the second non-gold The direction that category strengthening core is embedded in respective restrictive coating is identical.
4. outdoor leading in cable as claimed in claim 2, it is characterised in that: the first nonmetallic strengthening core or/and second Nonmetallic strengthening core is FRP strengthening core.
5. outdoor leading in cable as described in claim 1, it is characterised in that: be equipped between the inner restrictive coating and external sheath layer Nonmetallic protective layer, the nonmetallic protective layer are coated on the outside of inner restrictive coating, and the external sheath layer is coated on nonmetallic protection Layer outside.
6. outdoor leading in cable as claimed in claim 5, it is characterised in that: the nonmetallic protective layer is fiber yarn layer.
7. outdoor leading in cable as described in claim 1, it is characterised in that: be embedded with tear rope, institute in the external sheath layer State tear rope synchronous insertion during forming external sheath layer.
8. outdoor leading in cable as described in claim 1, it is characterised in that: the inner restrictive coating and external sheath layer are low cigarette Halogen-free type restrictive coating.
9. such as the described in any item outdoor leading in cables of claim 1-8, it is characterised in that: the cable core include fiber unit and The insulating layer of clad optical fiber unit, the excess fiber length of the fiber unit are 1.0 ‰~2.0 ‰.
10. outdoor leading in cable as claimed in claim 9, it is characterised in that: filled between the fiber unit and insulating layer There are fiber paste or dry type flexible water blocking yarn.
CN201811236365.9A 2018-10-23 2018-10-23 Outdoor leading in cable Pending CN109031567A (en)

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Application Number Priority Date Filing Date Title
CN201811236365.9A CN109031567A (en) 2018-10-23 2018-10-23 Outdoor leading in cable

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Application Number Priority Date Filing Date Title
CN201811236365.9A CN109031567A (en) 2018-10-23 2018-10-23 Outdoor leading in cable

Publications (1)

Publication Number Publication Date
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109959994A (en) * 2019-03-18 2019-07-02 合肥鎏通网络科技有限公司 A kind of buried optical fiber cables damp proof insulation set and preparation method thereof
WO2021128970A1 (en) * 2019-12-28 2021-07-01 江苏亨通光电股份有限公司 High-and-low-temperature-resistant remote optical cable and manufacturing process therefor
CN115291348A (en) * 2022-08-26 2022-11-04 江苏亨通光电股份有限公司 Multifunctional laying optical cable for access network and laying method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102749688A (en) * 2012-06-25 2012-10-24 扬州市洪明电子器材有限公司 Novel optical cable suitable to arrange in buildings
CN103513371A (en) * 2012-06-30 2014-01-15 肖玉山 Full-dry type optical cable
CN204882973U (en) * 2015-07-09 2015-12-16 安徽天龙电器线缆集团有限公司 Communications optical cable
CN105353486A (en) * 2015-12-22 2016-02-24 长飞光纤光缆股份有限公司 Indoor-outdoor rodent-resistant cable and manufacturing method thereof
CN107656342A (en) * 2017-08-25 2018-02-02 江苏中天科技股份有限公司 A kind of Novel anti-mouse stings optical cable and preparation method thereof
CN208818883U (en) * 2018-10-23 2019-05-03 江苏亨通光电股份有限公司 Outdoor leading in cable

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102749688A (en) * 2012-06-25 2012-10-24 扬州市洪明电子器材有限公司 Novel optical cable suitable to arrange in buildings
CN103513371A (en) * 2012-06-30 2014-01-15 肖玉山 Full-dry type optical cable
CN204882973U (en) * 2015-07-09 2015-12-16 安徽天龙电器线缆集团有限公司 Communications optical cable
CN105353486A (en) * 2015-12-22 2016-02-24 长飞光纤光缆股份有限公司 Indoor-outdoor rodent-resistant cable and manufacturing method thereof
CN107656342A (en) * 2017-08-25 2018-02-02 江苏中天科技股份有限公司 A kind of Novel anti-mouse stings optical cable and preparation method thereof
CN208818883U (en) * 2018-10-23 2019-05-03 江苏亨通光电股份有限公司 Outdoor leading in cable

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109959994A (en) * 2019-03-18 2019-07-02 合肥鎏通网络科技有限公司 A kind of buried optical fiber cables damp proof insulation set and preparation method thereof
WO2021128970A1 (en) * 2019-12-28 2021-07-01 江苏亨通光电股份有限公司 High-and-low-temperature-resistant remote optical cable and manufacturing process therefor
CN115291348A (en) * 2022-08-26 2022-11-04 江苏亨通光电股份有限公司 Multifunctional laying optical cable for access network and laying method thereof

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